{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:CX4U5F7STPZJO6QVERDPWTTCBM","short_pith_number":"pith:CX4U5F7S","schema_version":"1.0","canonical_sha256":"15f94e97f29bf2977a152446fb4e620b0f2ec6b01b713d48146ca3bdb6298b05","source":{"kind":"arxiv","id":"2606.03642","version":1},"attestation_state":"computed","paper":{"title":"A variable-coefficient model for decay of isotropic turbulence capturing effects of finite cascade time and Reynolds number","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.flu-dyn","authors_text":"Ali Mani, Daniel Israel, Rozie Zangeneh, Wenyuan Xue","submitted_at":"2026-06-02T13:35:22Z","abstract_excerpt":"We study isotropic turbulence decay in the context of the k-epsilon model, which solves the dissipation and kinetic energy equations. In modeling the dissipation equation, the coefficient C_epsilon2, suggested by Hanjalic and Launder [Journal of Fluid Mechanics, 1972] [1], is related to the temporal decay power-law by n = 1/(C_epsilon2 -1 )) and is assumed to be a constant value. In this work, we perform high-fidelity numerical simulations to examine the mathematical terms responsible for the decay of isotropic turbulence, considering both scenarios of forced and decaying turbulence. Our data "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.03642","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-02T13:35:22Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"1d4f1f15e48f64403166e8f6df8fb682b501f4298a4156b3f9bb2feabce9718c","abstract_canon_sha256":"d32601deb337641df5a62d62cdfc6a2ee40b7304f2aabb2e4e66cdc3e1ba04f0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T01:06:03.208629Z","signature_b64":"NlXrdYCOdAIVnfEr1TzsALsenpyAEYDoXtiS7RmrgBYz7azAHc58b7I4AvZCO1Rbi6EkN6HPmdG8hRtdYXDyBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15f94e97f29bf2977a152446fb4e620b0f2ec6b01b713d48146ca3bdb6298b05","last_reissued_at":"2026-06-03T01:06:03.208210Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T01:06:03.208210Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A variable-coefficient model for decay of isotropic turbulence capturing effects of finite cascade time and Reynolds number","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.flu-dyn","authors_text":"Ali Mani, Daniel Israel, Rozie Zangeneh, Wenyuan Xue","submitted_at":"2026-06-02T13:35:22Z","abstract_excerpt":"We study isotropic turbulence decay in the context of the k-epsilon model, which solves the dissipation and kinetic energy equations. In modeling the dissipation equation, the coefficient C_epsilon2, suggested by Hanjalic and Launder [Journal of Fluid Mechanics, 1972] [1], is related to the temporal decay power-law by n = 1/(C_epsilon2 -1 )) and is assumed to be a constant value. In this work, we perform high-fidelity numerical simulations to examine the mathematical terms responsible for the decay of isotropic turbulence, considering both scenarios of forced and decaying turbulence. Our data "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.03642","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.03642/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.03642","created_at":"2026-06-03T01:06:03.208274+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.03642v1","created_at":"2026-06-03T01:06:03.208274+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.03642","created_at":"2026-06-03T01:06:03.208274+00:00"},{"alias_kind":"pith_short_12","alias_value":"CX4U5F7STPZJ","created_at":"2026-06-03T01:06:03.208274+00:00"},{"alias_kind":"pith_short_16","alias_value":"CX4U5F7STPZJO6QV","created_at":"2026-06-03T01:06:03.208274+00:00"},{"alias_kind":"pith_short_8","alias_value":"CX4U5F7S","created_at":"2026-06-03T01:06:03.208274+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM","json":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM.json","graph_json":"https://pith.science/api/pith-number/CX4U5F7STPZJO6QVERDPWTTCBM/graph.json","events_json":"https://pith.science/api/pith-number/CX4U5F7STPZJO6QVERDPWTTCBM/events.json","paper":"https://pith.science/paper/CX4U5F7S"},"agent_actions":{"view_html":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM","download_json":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM.json","view_paper":"https://pith.science/paper/CX4U5F7S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.03642&json=true","fetch_graph":"https://pith.science/api/pith-number/CX4U5F7STPZJO6QVERDPWTTCBM/graph.json","fetch_events":"https://pith.science/api/pith-number/CX4U5F7STPZJO6QVERDPWTTCBM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM/action/storage_attestation","attest_author":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM/action/author_attestation","sign_citation":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM/action/citation_signature","submit_replication":"https://pith.science/pith/CX4U5F7STPZJO6QVERDPWTTCBM/action/replication_record"}},"created_at":"2026-06-03T01:06:03.208274+00:00","updated_at":"2026-06-03T01:06:03.208274+00:00"}